Whether it's from misalignment, dust contamination, environmental stress, or poor splice protection, these problems can quickly escalate if not addressed. A fiber optic pigtail is a fiber optic cable with one end terminated with a factory-installed connector and the other end unterminated. As a result, the connector side can be connected to equipment, while the other side is fused in the case of fusion splicing and a mechanical connection in the case. Fiber Optic Cable is a form of modern network cable that has a far greater capacity than electrical communication connections. The world's networks are increasingly built on fibre's ability to transmit data over long distance with minimal signal loss - fusion splicing makes this possible.